1.1 This standard covers requirements for strip-wound cut cores, in both a single-phase and three-phase forms of construction, having rectangular cross sections and rectangular windows (coil spaces), manufactured from cold-reduced grain oriented silicon-iron alloy strip, for use in transformers and inductors for telecommunication equipment and for electronic devices.
1.2 This standard may be generally applied to cores of other than rectangular window or cross section. In this case, certain characteristics such as elec-trical properties and dimensional tolerances, shall be the subject of special agreement between the purchaser and the manufacturer.
IS 8644-1977 history
1978IS 8644-1977 Specification for wound cores from grain-oriented ferrosilicon alloy strip